Description
lib/x509/verify.c in GnuTLS before 3.1.22 and 3.2.x before 3.2.12 does not properly handle unspecified errors when verifying X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers via a crafted certificate.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | gnutls28 | 3.2.11-2 | — |
| Debian 13 | gnutls28 | 3.2.11-2 | — |
| Debian 12 | gnutls28 | 3.2.11-2 | — |
| Debian 7 | gnutls26 | 2.12.20-8+deb7u1 | DSA-2869-1 |
| Debian 6.0 | gnutls26 | 2.8.6-1+squeeze3 | DSA-2869-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | gnutls26 | 2.12.23-12ubuntu2 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | gnutls +3 | 2.8.5-13.el6_5 | RHSA-2014:0246 |
| RHEL 6 | rhev-hypervisor6 | 6.5-20140324.0.el6ev | RHSA-2014:0339 |
| RHEL 5 | gnutls +2 | 1.4.1-14.el5_10 | RHSA-2014:0247 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Mission Critical 6 | gnutls +3 | 2.8.5-4.el6_2.3 | RHSA-2014:0288 |
| Red Hat Rhel Mission Critical 5 | gnutls +2 | 1.4.1-3.el5_3.6 | RHSA-2014:0288 |
| RHEL 6.4 EUS | gnutls +3 | 2.8.5-10.el6_4.3 | RHSA-2014:0288 |
| RHEL 6.3 EUS | gnutls +3 | 2.8.5-7.el6_3.2 | RHSA-2014:0288 |
| RHEL 5.9 EUS | gnutls +2 | 1.4.1-10.el5_9.3 | RHSA-2014:0288 |
| RHEL 4 ELS | gnutls +1 | 1.0.20-5.el4 | RHSA-2014:0288 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | gnutls | 3.4.15-1.1 | openSUSE-SU-2024:10105-1 |
Advisories 7
- RHSA-2014:0339 Red Hat Security Advisory: rhev-hypervisor6 security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:0288 Red Hat Security Advisory: gnutls security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:0246 Red Hat Security Advisory: gnutls security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:0247 Red Hat Security Advisory: gnutls security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2869-1 gnutls26 - incorrect certificate verification Debian Security (DSA / DLA) · Mar 9, 2026
- ICSA-14-135-03A Siemens RuggedCom ROX-based Devices Certificate Verification Vulnerability (Update A) CISA ICS & IT advisories · Jun 9, 2025
- openSUSE-SU-2024:10105-1 gnutls-3.4.15-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- 57321 third-party-advisory
- 57260 third-party-advisory
- RHSA-2014:0288 vendor-advisory
- http://gnutls.org/security.html#GNUTLS-SA-2014-2
- SUSE-SU-2014:0445 vendor-advisory
- 57274 third-party-advisory
- SUSE-SU-2014:0319 vendor-advisory
- RHSA-2014:0247 vendor-advisory
- 65919 vdb-entry
- SUSE-SU-2014:0320 vendor-advisory
- SUSE-SU-2014:0322 vendor-advisory
- SUSE-SU-2014:0324 vendor-advisory
- 57254 third-party-advisory
- RHSA-2014:0339 vendor-advisory
- 56933 third-party-advisory
- SUSE-SU-2014:0323 vendor-advisory
- RHSA-2014:0246 vendor-advisory
- SUSE-SU-2014:0321 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1069865
- USN-2127-1 vendor-advisory
- 57204 third-party-advisory
- openSUSE-SU-2014:0346 vendor-advisory
- 57103 third-party-advisory
- openSUSE-SU-2014:0328 vendor-advisory
- openSUSE-SU-2014:0325 vendor-advisory
- DSA-2869 vendor-advisory